Acting on a tip off, the police held a man, identified as Dhiraj from Madharpur Bazar and seized 20 Kuwaiti Dinar (Rs 4,380), Superintendent of Police Vivek Kumar said.
A native of Indauli village under Maharajganj police station area, the man could not explain the source of the foreign currency with him, Kumar said.
Further investigation was on, the SP said.